Electricity: power supply or regulation systems – For reactive power control
Patent
1994-02-14
1996-01-09
Nguyen, Matthew V.
Electricity: power supply or regulation systems
For reactive power control
323207, 307105, G05F 170, H02J 102
Patent
active
054831482
ABSTRACT:
An active filter and method for stabilizing a single-phase ac line to which multiple nonlinear loads are connected, comprises two pairs of switches connected in two switching loops across a capacitor. One loop is connected to one leg of the line through an inductor and the other loop is connected to the other leg of the line directly. Voltage from the capacitor is followed and averaged to produce a scaling factor which is multiplied by a value corresponding to the actual ac line voltage. The resulting trajectory for the line current is compared to the actual line current and used to switch the pair of switches in the first loop to shape of the line current. A zero-crossing detector connected to receive the ac line voltage determines the polarity of the shaped current.
REFERENCES:
patent: 4906860 (1990-03-01), Asaeda
patent: 5162983 (1992-11-01), Kumagai
patent: 5239367 (1993-08-01), Sato
patent: 5321598 (1994-06-01), Moran
patent: 5397927 (1995-03-01), Suelzle et al.
patent: 5430364 (1995-07-01), Gibson
patent: 5436550 (1995-07-01), Arakawa
Wojciak and Torrey, Oct. 1992 IEEE Industry Application Society Annual Meeting Record.
Nguyen Matthew V.
Rensselaer Polytechnic Institute
LandOfFree
Single-phase active power filter for multiple nonlinear loads an does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Single-phase active power filter for multiple nonlinear loads an, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Single-phase active power filter for multiple nonlinear loads an will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-1304659